The Ultimate Guide of How to Installing Conical Twin Screw and Barrel
Preparation: It is a good chance to maintain the extruder when you replace your conical twin screw and barrel. Please clean up the extruder before installing new screw and barrel and make sure that the extruder’s body frame is horizontal with ground.
Release all heaters from the screw barrel and the connector before installation.
Make the barrel parallel with the frame of machine.
Make the internal clearance between screw and barrel 0.25mm. Take backwards of screws to the side of gearbox for 4-6mm after pushing it tightly to the barrel small sides.
Make sure that the two screws are symmetrical when you insert them to barrel.
Taking screws backwards to the side of gearbox tightly.
Screw the screw plug into screw shaft tightly.
The most important thing is that you need to push screw backwards to the side of gearbox before you start the machine. Otherwise the screws will go forward to the barrel small side when you start machine.
Observe from the feeding hole to see if the clearance between two screws is equal.
Do not operation the extruder without feeding material, otherwise the screws will go forward to the barrel small side and can not be moved anymore.
Click here to see tutorial video of how to installing conical twin screw and barrel.